39680491 has 8 divisors (see below), whose sum is σ = 40085424. Its totient is φ = 39277920.

The previous prime is 39680483. The next prime is 39680507. The reversal of 39680491 is 19408693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39680491 - 2³ = 39680483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39680461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59701 + ... + 60361.

It is an arithmetic number, because the mean of its divisors is an integer number (5010678).

Almost surely, 2^39680491 is an apocalyptic number.

39680491 is a deficient number, since it is larger than the sum of its proper divisors (404933).

39680491 is a wasteful number, since it uses less digits than its factorization.

39680491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 39680491 is about 6299.2452722529. The cubic root of 39680491 is about 341.0821661690.

The spelling of 39680491 in words is "thirty-nine million, six hundred eighty thousand, four hundred ninety-one".